I am not being taken seriously regarding my car

I am not being taken seriously regarding my car. The car has a mechanical failure, and they are dragging their feet in resolving my issue. I get empty promises, and my emails are not being responded to. I need my car as my job is reliable on it. Can somebody at Haval Alberton start taking me seriously? This is your brand that you were quick to sell to me. Now that it has issues, you are struggling with troubleshooting your own brand. My maintenance warranty company is waiting for their report in order to see how they can help me. Can someone in a higher position call me? someone with decision-making authority.